Here is a link to the (old) discussion of using Ikea Lack tables as support for hifi gear (pay special attention to the posts by caterham1700 - who owned Greater Ranges/Neuance).
If the construction notes/guidelines are followed you can expect excellent results (better than that of many of the commercial footers/platforms I’ve tried in the past)
https://forum.audiogon.com/discussions/here-s-how-i-make-my-equipment-racks
DeKay